The dimensions of the symmetry classes of tensors, associated with a certain cyclic subgroup of $ which is generated by a product of disjoint cycles is explicitly m given in terms of the generalized Ramanujan sum. These dimensions can also be expressed as the Euler -function and the Mobius function.
On the principle of cyclic symmetry in machine dynamics
β Scribed by Ramamurti, V. ;Seshu, P.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1990
- Tongue
- English
- Weight
- 418 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0748-8025
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β¦ Synopsis
Abstract
Cyclic symmetric structures are those that posses a circumferentially periodic geometry, e.g. gear wheels, bladed discs, etc. Accurate prediction of their static and dynamic characteristics is essential to ensure optimum design. An analysis of the entire structure is often prohibitively costly. Through illustrative examples, the essential features of an analysis scheme exploiting the geometric periodicity are brought out. Avoiding much of the mathematics, the underlying principle (termed theβe^iΟ^ relationshipβ) for both static and dynamic analysis is explained. The parallel to the special case of axisymmetric structures is drawn.
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